Combined type-writing and computing machine.



E. THOMAS. COMBINED TYPE WRITING AND COII'IFII'I'ING I'IIACHIIII;

APPLICATION FILED AUG. II ISIS.

SSHEETS-SHEEI' I.

lo SQ 'wlTNESSEsf E. THOMAS.

COMBINED YPE wRmwG AND coMPumG MACHINE.

APPLICATlON FILED UG. IQXS.

Ffa-tent@ Jan, 2i, 1919Y 5 SHEETSSHEET 2.

NVENTR:

E. THGIVIAQ. GQNBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED AUG. I. 9I3.

Patented Jan. 21, 1919.

5 SHEETS-SHEET 3A ALZZNEY ggg l rLNVENTOFU www VMM E. THOMAS.

commfo TYPE wRmNG AND CQMPUHNG MACHIN..

APPLICATION FILED AUG. I. |913.

atnted Jam 21, 1919.

5 SHEETS-SH-EET 4.

INVENTOR:

APFLICATIOII' FILED AUGJ. i913.

Patented Jan. 21

aus

UNITED STATES PATENT OFFICE.

EDWARD THOMAS, OF'NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, T0

UNDERWOOD COMPUTING MACHINE COMPANY, OF NEW YORK, N. Y., A CORPO- RATloN or :NEW YORK.

Specification of Letters Patent.

COMBINED TYPE-WRITING ANI) COMPUTING MACHINE.

Patented Jan. 21, 1919.

applicati@ med August 1, 1913.v serial No. 732,391.

To all whom it may concern:

Be it known that I, EDWARD THOMAS, a citizen of the United States, residing in New York, in the county of New York and State of New York, have invented certain new and useful Improyements in Combined Type- WVriting and Computing Machines, of which the following is a specification.

My invention relates to combined typewriting and computing machines, and more especially to simplifying and improving the means by which the operative may determine whether said machines shall add, subtract, or leave uncomputed the numbers as written I in various columns by such machines.

For the purpose of illustration, my invention is' herein shown as applied to an Underwood-VVrightcombined typewriting and computing machine in which the numeral keys of the typewriter controlan escapement through which a motor turns the master wheel` the keys by their operation on said escapement determining how far the motor shall turn the computing wheel then connected thereto by the master wheel whenever ,a given key is operated.

Typewriting machines, such as the Underwood, are often furnished with combined column-selecting, that is, those arranged to select a major lcolumn or zone, and` decimaltabulating keys, that is, those arranged to select -a digitl column or letter space in a zone, and my invention is herein disclosed as applied to such machines. whenever a column-selecting and a decimaltabulating key are properly depressed, the typewriter carriage is released and travels along until arrested at a point determined by the two tabulating keys then depressed, which point may be in any Zone and at any digit column or letter space in that zone. One set of said tabulating keys, preferably the column-selecting keys, according to my invention, may beprovided with a connection for determining Whether the computing mechanism shall be eective or not, and whether it will add or subtract when the typewriter carriage comes to rest after the operation of such a key. For this purpose, each of such keys may be'Provided with a setta-ble lug or interponent which becomes effective whenever the key is operated, to so In such machines When the typewriter carriage has reached the end of the column in which work is to be y done, means nay be provided whereby the computing machine connections may become ineffective, so'that no further computations will be eected by the numeral keys of the typewriter until another tabulating key of the proper kind is depressed.

To obtain such a result,` my invention Vis herein disclosed as applied to a column-selecting device vof the type disclosed in the patent to Lester A. Vernery, No. 1,108,415, dated August 25, 1914. In said patent the usual column stops are settable alon a rack bar which is pivotally mounted on t i e typewriter carriage. Said column stops are normally out of reach of the key-operated counter or decimal stops. When, however, the proper column is reached, the rack bar with its stops, is moved down to a position where the column stops will intercept any effective decimal stop, and bringv the typewriter carriage to rest. Where such a structure is used in carrying out my invention, the mechanism may include means for-holding said rack bar and its stops in their effective position until the typewriter carriage has passed clear of thecolumn in which computing is to be done. p

The connections for so holding the rack bar and its stops may include means for simultaneously holding the connection of the typewriting machine to the computing machine in its adjusted position until the end of the column is reached. The release o the rack bar may then be arranged to release said computing machine connection so that it /moves back to ineffective or any normal position.

The invention is herein shown as applied to a cross-addingv machine of the Underwood-Wright type, such as is disclosed in Vlrights application No. 574.813, tiled August 1, 1910 (now Patent No. 1,244,398, dated October 23, 1917), wherein there is shown a computing machine carriage, which is intermittently connected to the typewriter carriage in such a manner that the computing mechanism operates a totalizer several times in one traverse of the typewriter carriage. According to the mechanism disclosed in said Wright application, the computing machine carriage is connected to the typewriter carriage intermittently, by means of a hook, which hook is intercepted by lugs settable on the ordinary tabulating rack bar of the Underwood typewriting machine. lVhen caught by one of said lugs, the hook is drawn along until it is released, and the carriage is automatically returned to its starting point. In said Wright application, these lugs are shown as extensions of the ordinary column stops. According to the present invention the ordinary 'column stops may be likewise utilized to catch said hook, and to hold said hook until the end of the column is reached. The release of the column stop rack bar, as above described may. cause the stop which has beenengaged with the hook to be released therefrom, and

then as described in said Wright application, the computing machine carriage may be automatically drawn back to its "tarting point.

From the above outline, it will be noted that the typewritercarriage merely. connects and disconnects the computing machine connections, while the column-selecting keys themselves determine in what way said connections shall be effective. It will also be noted that by having the addition and subtraction control on the column-selecting keys themselves, there is little likelihood of mistakes in adjusting the mechanism. The adjustment of the stops on the typewriter carriage determines where the column shall be and when the connections of the computing machine to the typewriting mechanism will take place, while the mere fact that the column selected is selected by a given column key determines how the computing connections shall -be effective. This avoids the necessity of having complex or diverse forms for the column stops, and also avoids the necessity of having toadjust any other devices with reference to such stops whenever a stop is shifted.

To insure accuracy in theoperation of the machine, certain safety devices may be employed, such as an interlock' between the column-selecting keys and the decimal-tabulatingfkeys so that it will be impossible to release the typewriter carriage until the computing machine connection has been adjusted by the tabulating key operated.

vOther features and advantages will here'- inafter appear.

In the accompanying drawings, l

Figure 1 `is a sectional side view of an Underwood typewriting machine showing my invention as applied thereto.

Fig. 2 is a skeleton perspective View showing the principal parts of my invention. Fig. 3 i's a rear view of the machine.

. Fig. 4 is a plan view of the column-selecting keys. A

Fig. 5 isa side View, largelybroken away,

column-selecting key depressed.

Fig. 6 is a plan view of part of the connections between the column-seleeting-key and the computing machine connection. V

Asimilar to Fig. 1, but showing the mecha- 'f nism with a decimal-tabulating and a Fig. 7 is a rear view of the connections for Fig. 10 1s a plan view of the connections Y between the typewriter carriage and the computin machine carriage. y

Fig. 11 1s a rear view of the column-selectin device. v f

iig. 12 is a plan View of the same.

In the usual Underwood typewriting ma-l chine, numeral keys 1 and alphabet keys 2 depress key levers 3, rocking elbow levers fi forwardly so as to thereby swing type-bars 5 upwardly and rearwardly against a platen 6, so as to cause type 7 on said type-bars 5 to print on a work-sheet passed around the platen 6. Said platenv is mounted in a carriage 8 which travels on rails 9, bein drawn by a spring-barrel 10, and its trave is controlled by an escapement wheel 11 connected to a pinion 12, which pinion meshes with a rack .bar 13 attached to the t pewriter carriage. Said escapement whee is controlled by dogs 14, said dogs being rocked by, a frame 15 forming part of a universal bar 16, said universal bar being operated by heels 17 on the type-bars every time a type prints on the platen 6.

The computing mechanism may be of the usual Underwood-Wright type in which a motor 18 (see Fig. 1)*operates computing wheels 58 in a total'izer 191 through a master wheel 19 (see Fig. 10) through connectionsv hereinafter' described. Said connectionsA are of the general type shown in the patents to lustave O. Degener, Nos. 990,238, dated April 25, 1911, and 1,010,349, dated November 28, 1911, wherein the motor, by'means of a suitable friction clutch, tends to turn a power shaft 20 carrying a bevel pinion 21, which latter turns a shaft 22 by means of a pinion 23, said shaft 22 being gearedto an escapement shaft 24 by means f a bevel pinion 25; and said escapement s aft, hyl'means of a bevelpinion 26, determines how far a -shaft 27 fast to the bevel pinion 26' shall turn.

Said shaft 27, by means of bevel gears 28 `and 29, turns a vertical shaft 30 which,

by means of the/usual Underwood-Wright reversible clutchBl, may be geared to the shaft 32 on which the master wheel 19 is iso;

-. Filhrough these eonneetions it. Will be Lit the motor Wlli turn the master numeral keys are provided 'ith consetteble so that the operation oi my y'ill permit seid eseapement turn 'to en extent determined the t 1 key operated. F or this purpose the rnent siiet 2e is fast to e gear wheel gear Wheelnieshes with e gear st on the. shaft, of e. primary mein, or indexwi'heel 35. timid indexis provided with series et digitv` "eenling setteble stops or pins i5?, one. .ii joins projected to zin eieetive every time numeral key is operated eoinj-rjmtation.

eet e pin, each. numeral key :i ieg S8, which lug, whenderessed, catches e e hell Crank iefer seid nel rank iever to si in`V i which e ni neiul key 1 is leve 413 will roek canse a joel; 5 pnor' seid lei er to strike the pins 37, thus projecting il ition.

n g the pio to effective posioperates e seeondziry esf reieese the indei.r wheel 36. To 'the end fi? of its piirsetting it universel disk 48, causing to reel: :i lever 519 that a link opposite end of Suid, lever index-wheel 36 which hitherpre viousl d index-wheel eonto under the torque ot i been held against rotzi'tir'm esly-prog'ected pin 5i which 'i ster wheel 51, seid star wheel been hele against roe dog on n rock numeral key is depressed, ns has ed, the disk 118 by ineens o the s the rook through mi m. 1 ere/on, and the dog ne to die tooth which it has been that. i, second dogg 57 also fast shalt 555 will then hold the tooth y n the numeral key is released, the iroe'd beek to its normal position y' iiis:-:lii p"1gthe dog 5'? elezir :1d pervrnit'tiiig the ster wheel by the previouSly-projeeted o vii, es d iserioed in seid to to en extent determined by the escape-- strikes the stur wheel 51.

its ineffective positionv by means of a com (not shown herein), and the. index Wheel tuins"`u1nler the torque 'of the motor until the pin 3T just projected This wheel is zirrested by another tooth 53 of the wheel 52 striking the dog which the backward motion of the disk 48 has returned to cii'ective position, thereby arresting the index vWheel The result of this operation hns been to allow the index wheel to rotate to mi extent determined by the distance between the previously-projected pin und the pin just projected by the operation of the numeral hey. When the master wheel 1S) is thus turned :it the depression of n numeral key, it turns tie Comput-ing vheel 5H with which it is engaged to the extent determined by theindex Wheel 36.

As he.. been described above, the operation oi' numeral key causes the, typewriter carriage to be fed forward by its escupement iif'lieel 11. lrVhenevcr the typewriter curi-inge thus feeds forward, it causes the muster wheel 19 to more in the opposite direction one step for each letter-space.

The connections for accomplishing this result may include the usuel column stops 59 of an Underwood typen'ritingmzichine, whieh,in the general manner described in the co-pendingr euse of Welter i/Yright, No. 574,813, filed August 1, 1910, intermittently engage a hook 5G (Figs. 1 and 10) on the end of u drew rod 61, so es to swing the rear end (32 ot' a horizontal lever G3, pivoted betiveenits ends et 6L, the forward end of seid lever being connected by a pin-zind-slot connection ut 64. to the computing machine earringe (l5. This carriage (35 Curries the, nulster wheel 19 along, cruising it to trau-'el und engage serieta'm the computing wheels 58.

1n addition to the step-by-step movements ot the carriage 8, the carriage may be given jump movements so that it can be positioned almost instantaneously in any major column or zone and at anyletter-space or digit column in such zone. This is accomplished similerly as in said Werner-y patent `by a series of inejor-roluinnseleeting or zone-selecting keys 67 and e series of decimziltabuluting (cligit-eolnmn or letter-space selecting) keys 68. That is to say, the depression of one of the series of ke s S7 determines' what particular zone, in tie, travel ot' the ciirriage, the oarrioge will sto ut, and the subsequent depression of one ot the keys 68 will determine at 'what particular digit column or litter space in 'such zone the 'zirriage will stop, provided the key 67 is mennivhile held down. in. other Words, to bring the carriage to the desired letter-spzicoend column, e decinnil and column key must he simultaneously held down, just :is in the, Ydhevrnery potent. A key 67 must first be depressed to determine et what major column or :cone the oerrisge will stop before one at the extreme right of its travel, we can strike any one of the keys 67 and determine whether we shall stop the carriage at the lirst, second, third, or fourth zone, etc., as the case may be.

In striking the key 67 it rocks the lever so as to raise, at the-rear end, a plunger` 81. There is one of these plungers 81 for each lever 80, and the plunger rises freely provided the carriage 8 has not advanced to a position beyond the zone selected by the key 67 depressed at the moment. The plungers 81, however, do not operate positively in selecting a zone but each is connected flexibly, by means of a spring 88, to its floating slide 86, having pin-and-slot connections 87 with its plunger 8l. The spring 88 is connected in each instance at one end to one of the pins 87 of the pinand-slot connection, and at the lother end to a pin 89 on the respective slide 86. The slides 86, however, are not permitted to rise and to perform their vvorkuntil the carriage 8 has traveled to such a position that it comes to the initial portion of the zone orl major colmnn )redetermined by the columnselecting key 6 actuated at the moment.

To prevent this risingof the Slides 86, there is provided an obstructing, holding, or locking bar 90, slidably mounted in brackets 90aand 90". The movement of this locking bar 90 (which has the same function as the bar 25 of the Wernery patent) is determined' by the carriage 8, and takes place at the passageinto successive zones or 'majorrolumns of the printin point, which zones are determined by tie carriage or column stops 59.; To move it, the locking bar 90 is provided with a rack 93, meshing with a gear l94, from whence it is driven. This gear 94- is connected, by a shaft 95, to a star Wheel 96, which is arranged to have its teeth project in the path of movement of the stops 59 carried by the lcarriage 8. As a stop 59 comes along, it will move the star Wheel 96 onel tooth, so as to move the locking' bar 90 one step. A step movement of the locking bar 90 corresponds with the distance between the slides 86.

The lockingbar normally projects above a series of tongues or lugs 91 providedy on the slides86,v so as to prevent their upward movement under the pull of the springs 88.

This locking bar 90, however, is provided with afsingle notch or groove 92, which will permit any one of the tongues 91 on a slide 86 to move up therethrough when brought in register therewith, provided this lslide isunder a tendency to move upward owing to the tensioning of its spring'SS by an ee- Leeaiai se. este cordant plunger 8l and its correspond key 67. That is te say, since only one the keys 67 will be depressed, only one the springs 88 will be tensioned, se th.; therewill be a tendency for but one of the slides 86 to move upward, and this particular slide can notJ rise until the carriage 8' some later column or zone inI which writing or computing is to be done.

As soon as the bar 90 brings its noterbeen tensioned as describedabove, said slid. will rise through the notch 92 and will roel; a lever 82, which is universal to all the slides 86 and capable of being rocked by any one of them. 'lhe particular connecu tion is formed by slots a in the slides 86 engaging a rod or bail 85 carried Athe lever '82. `The lever 82 is provided. with bearing or.' idle roller. 83 arranged to everlie a rail 8l connected to and exrcnding the length of a rack 77 on which the column 59 are adjustably mounted at letter-space intervals. The rack 7 7 is pivotally mounted at 78 by means of brackets, and is normally heldin a raised position by a. soring "79, so that the stops 59 are held up in ineffective position. The springs 88 are each strong f than the spring 79 so that theT can ov come its action. 1When, however, 'the le" 82 is rocked in the manner just described by the action of one of the spring. r

over the slide 86 of which the spring' has o8 and its slide at the proper computing :tone column, 'then the rack 77 and the sto' s ried thereby will be depressed to position, enabling the 'particular which happens to be in position at ticular point in the travel of the car; to come into play.

Before this can have come about, howe. the carriage 8 must of necessity Alave t eled along, and to enable the travel of 'the carriage, it is necessary, in this niachi operate one of the tabulating keys will rock the lever 69 to raise a pl andA bring the same into a position to -aten cept one' of the stops when the latter i;I

t depressed by a depression of its recit 77' as down another arm 73 of this levenv which draws on a link 74 to rock a. levcr75, having at its front end a bearing roller 76 engaging a smooth portion or the rack and raising it onty of rnesli will) tno 1.a. 'l'his 'iorn'iitsl the Carriarfe 8 to traval for- 2` naiil ninlii litl Amill o' iln siii-ing liiii'iill l0, is ilioi'e. this loinvard more@ mont ot' the oiniiago 8 will continuo until this looliiiiff liar 00. n'liiftli tiawls with tlni :itli'aiif'oill stop by stop until thv notch 02 'Llioi'oiii coiiiis iiilo ii-tisli-i' willi the particular slitlo 1613 tiiniling to riso. lli/'hon this oci:ui lliin sliiliwill iniiiiiiliatiil)1 .sprintf up, roil'iiig the lowi- HL and iliiprvsning tho rack TT to liiiiiggy llitx partivnlnr atop .30 Corrospontling to the col'iniii-Solocting l-:oy 07 ao tnatoil, within ruin-.li of tho particular plungoi- Gti raisoil, so that tho two may cooperate to .stop tlioo'ari'iaggwq S al any selected zone anrl at any point in suoli zone.

:ft will thus 'no :soon that by the dapro nn' l Sion o?. first :i rolninn or zono-Solocti .D e, ""/1`J-l .1L .LL nl and mon a nominal-ain ating oi leiterlngA 0l' at tho front lower arm of said Stop into position whore ity will Catch tho hook (30 wliicli drawn the Computing niacliinvl carriage along, Thus saiil lng Yoininl a ltiioiiii nation whirling' iltvioo (as suon in Fig. 1). oiiinilly the lug 97 travels clear of the hook 60 tliun avoiding the noiso'and Wear incidoiit to having tho hook '60 Catch the column stop lugl 07 every time itV passes saicl hook.

@l oouraa. it ina iaol 77 iS normally nolni in a rainr-(l position hy the spring 79, the, tapiiots or Stops .i9 and their lugs 97 will be linlil clear ot" thtl hook S0 until tho partienlai` zoiio hasboen selected by the depression of tlio raclr 7'? at the right; time., when the lioolt 00 :intl tlnis the master Wheel may be aili'ancm'l stop h5 Stn/p Willi snlisaqnent. oom- ;inting movements of the 8.

ln order to lioii'l the colinnn Stops in ponil ion to ringing@ thv hooi( G0 tlnrin'g an onlli-il volnnini llioooliinni Stops 59 aro provided will, iwiarnrarfllv nxtonningg lng?, lffl. which lugs. wlwr l: liar T7 is .flnprosse-zl, will pas@ linniatli a sliol or cani oalf'h oiif'ot/ed on tliii lli-:imo oi" tlni machinav on sivnb Shafts 100, Said nani oatvh 09 is ot' the width of a colinnn, :intl nr-noo onro a Colnnin stop 59 mitvliiin uniler il( Saifl Cani Catch, an Soon in Fig. will liolfl Saiil volnnn Stop flown So that. its lug 97 ninfafos the lioolr G0 throughout ilio wi lili ol tho ifolunin. Tho

Cani Catch 99 normally is swung forward by iioiso anil wear which might otherwise' oni-nr.

Fw'aiil am 'c t li` as sown in Fig. 10, proliiiilily iiiclinlos a cani 101 at its right-hand migo, so that the' ypowriter carriage in its iioviiiioiit' in loller-landing tliiovlion, Vwill i-:iiisii a halioiililii' 50h on thv stop 50 to forgo lanni i-iiiii atc-li outwardly. and a straight, (algo 102 loiiiioil as a continuation of saiil am brain` :igainnl tho i'olnnin Stop 50 and liolils saicl vani ratcli in its outward 03ertii'o position throughout the Width of one voliui'iii. When tho oinl ot' the Column is i'iin-ln-il, tlio column Stop 559 passes boyoinl thu st `iight oligo 102 releasing the cam ratcli 00. anti the rack liar 7? is swniig up l,- v il." spi-ing' 70. This lifts tlio lng 97 clear oi tlio liook 00, tlins releasing it and permitting a spring G0a to rotnrntlio Comput,- ingf variiagix to the lioginningr of its travel.

llllniniwor Said cani natrli 09 isii in its vll'octiro position` it, may maintain the iinnioral keys anrl tho Coiiiiiiiting mechanism ioiinoototl, wliilnv saifl numeral koys mayr lie normally ilisionnooloil from the Coiiipnting iintlianiniii. For this purpone tlin hook 39 'For oaili numeral kay passos through a shifter hai' 103` which when drawn to the loft holds the hook@ 30 niitloiitlio' lugs 38, so that` ivory timo a immoral kay is deprvsseil it will operato tho Computing nia- Ohino connmtionn in tlio `manner above flosvriliorl.k lf, hon'ovor. saitl Shifter bar is iiioi'ml to the right. it rairies all tho hooks 30 i-loiir of the, lugs 39, so that tho immoral kann l :iro i'linnonnnntr-il i'ioii'i tlio Computing mat-hina Said Shifter lia` in connontoil to the cam vatfili 00 in Such a way that .vlianevor tho mitvh 00 in niovvil outward liy a Column Stop 50. ity may rauo the liookn 30 to ongago their; i'ospectivo lugs 38. The Connections for a0- toniplisliing this inrliulo an elbow lever 104 loiniml as anextonsion of tlio cani Catch 90, :intl saiil elbow lover whenever tho cani (-:itnli 00 is lorfotl outward tlraWS upward a linlt 105', no as to, swing a rotl; Shaft 106 by moan.Q oi" a rook arm 107 tlioraon, thus drawing flown a link 108 attached to a.

4soronfl'ro'lt arm 109 on Saii rock Shaft 106;

sairl linl: 108 when it, is {l''awn downwardly roi-,kn` tho stiiftor liai' 10i-3 'to tho loft. tlii'ongli an arm 11G, which is connected to a leverl 111; saiil slii'ftor liar being; attached to "che lower and o? said lover/'111.

Thorn is intorpoSr-,cl "between the ariii 110 azul tlin lover 111` a nianuall7 sottalolo coniimition AFor niiiltiiigf'llio link 108 effective or iiionolivo on tho shifter bar 103. Said suitable connection includes a lip 112 formed on the frame of the machine.

on an extension of the arm 11G beyond the pivot 113, on which said arm is pivoted; said lip underlying a pin 114 fast in a toothed segment 115. to the lever 111 by a spring 116, which. extends from a pin 117 in the segment to a pin 118 on the lever, so that'whenever the link 108 draus downwardly the arm 110, the lip 112, on said arm will turn the segment so as to draw the spring 116 taut, thus drawing the shifter bar to hold the hooks 39 in their effective positions. The lever 111 also includes a bell crank extension 119, which overlies a pin 120, by which the link 108 is joined to the arm 110. Since the pin 114 on the segment 115 lies above the lip 112 of the arm 110 and the pin 120 underlies the bell crank arm 119 of the lever 111, the connections are such that the link 108 will almost positively move the lever 111 whenever said link moves up or down. Said settablel connection may be set to make the connection ineffective. For this purpose the segment 115 meshes with an idleL segment 121, which is pivoted on a post, 122 Said idle segment has fast thereon a handle 123, by

which it may be revolved, so as to turn the segment 115 meshing therewith against the tension of the spring 116` thereby carrying the pin 114 up and away from the lip 112. Said segments are so arranged that when the handle 123 is carried a considerable distance around, the spring 116 will be thrown past the pivot 113 of the segment 115, and so bring and hold saidesegments set with the lip 112 on the side of the pivot 113 opposite from the pin 114e. With the pin 114 in this position it will be seen that the link 108 is unable to draw the shifter bar 103 to effective position. This provides means whereby `the .numeral keys of the typewriter may be operated free of the coinputing mechanism by the mere throwingf of a single handle 123. The shifter bar 103 is normally drawn to ineffective position by a spring 124 which is anchored in the frame of the machine and draws on the pin fast in the lever 110. The segments 115 and 121 are prevented from revolving so far that they get out of mesh.` byma'kin the end yteeth 121a of one segment over size, thus preventing said teeth from fully turning to mesh with the other segment.

From what has been said, it will beunderstood that whenever a column key 67 is depressed it moves the cam stops 59 to effective position, and through the cam catch i 99 the numeral key hooks 39 are moved to effective position. The machine is then in condition to do computing. 1n order to determine what kind of computing can be done, or whether computation shall be done at all, connections are provided between the column selecting keys and the clutch 31 in Said segment is connected incassi the computing train so that the operation of a column selecting key may determine how the computing connection shall operate through said clutch. To accomplish this result, each column selecting key is provided with a settable lug or interponent 125 formed as a collar slidable on a rearward extension 126 of the column selecting key lever 80. lilhenever a column selecting key 6T is depressed, said lug may be set so as to 7 5 strike one or the other of two hails 127 and 12S, so as to shift the clutch`31 in one disection or the other. For this purpose said hails are fast to a shaft 129 on which shaft is fast a rock arm 130, which rock arm is connected to a shifter 131 for the clutch 31 by means of a link 132, attached to an elbow lever 133 formed on said shifter. in a position seen in Fig. 1 with no column selecting key depressed, the shifter 131 holds the clutch 31 set at a neutral position in which the shaft 30 may revolve idly without affecting the master wheelf Said figure shows the computing control collar 125 at its rearward position to which it has been moved by a shift link 134, there being one of said shift links on each tabulating key.

For operating said shift links to adinet the computing control collars 125. each tabulating key is provided with a hood 135, which covers most of the face of said. key, and is formedintegral with a shaft elfitending downwardly through said k x shaft having a crank arm 137 thereon is pivotally attached at 138 to the sh., 1 f 134.

It will be seen that by rotating 135. its collar 125 may be set at an position within its range of move the extension 126 of the colmi' lVhen said collar is in its rearwa A a depression of the column -toting key lever will cause the computing mechanism to add. ln order to indicate this visibly to the opfrator, the column selecting key v11134 6T is provided with suitable notations 139, M0 and 141 on its upper surface marked respectively, i-dd,7i Subjj and Neu Whenever the collar 125 is at adding position7 a-broken away portion 142 ofthe hood 115 `column selecting key is operated. 'ln order to retain the computing mechanism at adding, subtracting or neutral whenever a c olumn key has been operated andre/leased, a 13C recare-i. a

latch is proyided which holds thc clutch 31 setA in whatsoever position it has been moved into h v the column selecting` key.'V For this purpolsc the shat't 12S) to which the hails 127 and 12S arc tast. has tast thereto a rock arm 142a which extends to a point adjacent a latch 14B. said latch being under the control of the cam catch 99. The connections are such that whenever 'a column Aselecting key G7 is depressed, wit i its collar 125 at the rearward position, as seen in Fig/1, said collar will rock the 'm 142a forwardly, so

-that a pin 14.4 on saidrock arm will catch behind a flat-sided notch 145 in the latch 143. A spring146 anchored in said latch 143 and the rock arm 142a draws on said latch and as soon as the,.pin 144 passes the edge of the notch, draws the pin into the notch, thus positively locking the computing connections at adding. In the meantime the operative has depressed the decimal tabulating key 68. causing the carriage of the typewriter to travel along in letter feeding direction, and when said carriage has arrived at the proper` position, the proper column stop 59 will swin'g the cam catch 99 outwardly as has been above described. This outward swinging of the cam catch 99 causes a downwardly extending release or kick ot arm 147 (see Fig. 5) of said catch to swing forward idly past a one-way catch 148. When the operative has written the required numbers in the column the latch 143 is released. This is done by the typewriter carriage which passes along so that the cam catch 99 is free from its column stop 59. A spring 149 (Fig. 2) then-draws the cam catch 99 into its normal position, thereby swinging the. release arm 147 of said catch rearwardly to the position seen in Fig. 1. ln so swinging. the release arm 147 catches the Hat face 150 of the release catch or trip 14S. rotating said catch around its pivot 151, so that a lug 152 on said catch will strike a pin 153 on a plate 154, said plate being pivoted at on a bracket fast on the typcwriting trame. This swings the forward end of said plate 154 upwardly drawing up a link 156, said link being attached to the latch 143, with the result that the `upward nievement of said link 156 lifts said latch high enough to free the. pin 144 from the notch 145. This permits the spring 146 to return the arm 142and the hails attached thereto. to the mid-position seen in Fig. 1, thus returning the clutch 31 to neutral position. The trip 148 is normally held by a spring 157 in position to be struck by the extension 147.

Similarlyv if the collar 125 is in its forward position where it will causo the mecha uism to subtract, the hails will be, swung to draw the clutch 31 to .subtracting position, and the pin 144 will catch in a subtraction notch 158 corresponding to the notch 145,

and siniilarly the extension 147 catch 99 will release the latch end et a column.

ln order to relieve the numeral 51e operating the computing connections A the collars on the column selecting keys set at neutral positions, means a"- rided for normally keepingbroken n ncction between the cam catch 9i) and "it shifter bar 103. To effect this. the shaft 10G in said connection is forme( two separated portions 159 and 14,30, on i. latter portion of which is Yfast the rock 107. which is connected to the cam while to the other portion are attach" the connections to the shifter bar 10?. portions are adapted to be clutched to every time a column selecting key' computing mechanism to add or su For this purpose, the section 159 has splined thereto a double clutch memoer with teeth at each end thereof. vThe po tion 160 of the shaft. 106 extends as a 162 over the shaft 159. which sleeve 1 enlarged at the center 168 to accomrr the double clutch member 161. rlie of" clutch member is splined on the shaft 'and has teeth at cach end thereof and 'ith are corresponding teeth in the opposite enr in the enlargement 163 ot the sleeve 1132 The connections to the column selecting itc; are such. that whenever one et said li. shifts the hails 12S and 127, said hail.. .f the clutch member 161 against one end n the other ot the sleeve 162, thus clos clutch. This closing occurs with pression or" any column selecting key, a collar 125 set for either addition traction. and therefore said clutch is closed before the travel of tl ie carriage brii a column stop 59 to swing the cam catch The connections for moyi the clutch include a link 164 pivoted thereto and the other end 'piyoted to the arm 142 Means are provided whereby when column selecting key is depressed to a... will cause the typewriter to write is color. Whereas when said key is dep to cause the mechanism to subtract, iA cause the typewriter to write in color. preferably red. f To accom y' the mechanism includes the usual wood hichronie ribbon vibrator mecha which comprises an actuator 165, ,rac-una on the universal bar 16; said actuator :i shit'table laterally on said universal har so to cause slots 166 ,in actuator to engace either ot t o pins and 171.1;ast a ribbon Tvibrator lever 167, said le-` fr t 168 and carrying a o. c. o

en a coniparatively small throw', and will f its upper s 'pe between the type 7 e platen 8, ivhile if the pin 170 nearer 'ot engages said actuator the ribbon l ce given a con'iparatively large throw, and the lower stripe will be interposed between vthe type 7 and the platen 6.

ln, the usual Underwood machine, said actuator is shiftable on said universal bar by keys and 178, said keys being mounted on opposite sides of a roel: shaft 174i, which roch shaft is connected by a rock arm 175 and link to the actuator To se the ribbon to be shifted to the appropriate color by the operation of acolumn selecting key 67, there is provided a cam piatte 177-comprising several cams which enswinging actuator' shift lever in one orsaid springs on either side of the and extending down into the path of increment of the arm 178. The cam plate 177 is connected to the clutch controlling arm 142g, by means of a linlr181, so as to je be shifted every time said arm 142L moves, said link being pivoted to one arm 182 ofa bell, crank le` the other arm 183 of which is pivotally attached to the cam plate 177.

Ehe ribbon controlling cam .plate 177, is shown in Figs. 3, 7 8 and 9 in rear ides `series of cams 184, `185 .,liich so placed as to autoi'nove the ribbon to Write red Whene mechanism is set for subtraction, rite bl ck Whenever the mechanism i to add or the computing mechanism i 1n shifting the computing conone to any other position, the tically simultaneously te carry one of its cams l, l 188 past an actuating pin 187, on e lever 178, and thereby thi-onv the ribbon tuating mechanism to the desired color. ns 185 and 188 are so arranged 'i be set4 manually by 172 and 178 to Write either color any time no matterfin what position said cams may have automatically set the ribbon actuating mechanism. To accompli'h this result, the ribbon control pla-te 177 stands in such a position that the keys 172 and 178 may be operated to manually throvfY the ribbon 'actuating mechanism into any desired position no matter to what position the computing mechanism is adjusted. This is accomplished by having cams broken away at the point Where the L" ,j nin 187 -on the actuator shift lever shown standing at black with the cam plate 177 at the position 1t occupies When the computing mechanism is fset. at neutral. In

i shifting from the-position seen in Fig. 3 to pressed manually to shift the actuator to cause the ribbon'to Write black if desired. rlhis Would siving the actuator shift lever 178 to the left, as' seen in Fig. 9. If then, the computing mechanism were shifted to adding or neutral position, the pin 187 would strike the outer side of the cam 186, as seen in Fig. 7 ythus holding the ribbon actuating mechanism in black Writing position.

ln Fig. 8 is shown the usual position of the ribbon 177 in moving from neutral black to adding black. If, in said figure the left hand ribbon key 172 were depressed. thus swinging the actuator shift lever 178 to the right, the cam 184 would strike the'pin 187 as the cam plate 177 moves downward and shifts the actuator shift lever 178 to the position seen in Fig. 3. To accomplish these and other results. it will be noted that .the cam 184 is shapedas a triangle, so that the two inivardfaces thereof both Will move the actuator shift lever 178 to the left While the cams 185 and 186 are shaped as nearly right angle triangles having their hypotenuses facing each other in parallel spaced relation, Ythus forming a track between said cams in which the pin 187 of the actuator shift lever 178 Will usually follovv in going from neutral to subtraction, that is to say from black to red.

ln order to prevent errors of various" kinds, certain safety devices are provided. One of these safety devices consists of an interlock between the decimal tabulating keys and the column selecting vkeys. of such a nature that it is impossible to operate anydecimal t-abulating key unless some column selecting key is lirst operated. This will prevent the carriage from being released from its escapement when no column stop 59 can be moved into effective position. Said interloclnas shown in Fig. 1 comprises av suspended locking bail 188 on rockf-arms 189, said rock arms being pivoted at cach side Iof the frame of the machine 1190; said bail 188 is normally drawnrearwardly by means of a spring 191, so thatit lies under forwardly extending hooks 192 formedon ...al tabulating key levers 88. Said hooks vprevent. the operation of any decimal key lever so long as the bail 188 is in its e'ective position. Said ball is, however,

moved to ineffective position every time a column selecting key lever 80 is depressed.v

For this purpose each column selecting key lever is provided with an upwardly extending cam arm 193, which extends forwardly having a cam face 194 which, when the `key is depressed swings the bai-l 188 clear or" the hooks '192, thus permittingthe depression 'of any decimal keylever.

'Another safety device prevents the operation of any column selecting key after theycolumn has been passed at which said col- Fig. 11. which is a rear view.- ln said ligurev the third column selecting key is shown a's having; been depressed, and having raised its slide S6 through the notch 92, so that the f typewriter carriage will 'bearrested -atthe third column.

ln movinfY the holdine har 99 to the, )osi-- tion seen in Fig. 1l where' its notch 92 permits the third column selecting' slide to' pass upward. said bar has broughty the abutment 195 in front of the first two column seleeting plunger-s S1. which are seen at the right hand in said ligure. This has lbrought the abutment above lugs 196 (Fig. 1) formed on the plungers 81 1nd said abutment lies so close to said lugs. that it is impossible for the operative-to raise the first two column plungers 81 by the operation of their respective column keys. vln other words. the abutment acts as a lock against the operation of any' column selecting key which might have been previously operated,b\\t which it would be. improper to operate at the present time. 1

rl`he present computing*v machine, as seen diagrammatieally in Fig. 10, is adapted tor footing and cross adding, and for this purpose is provided with several footing' totalizers 197, 198

These. totalizers are operatedin the usual manner in the, Underwood-llright machine from the motor 1S by means of a continuation Q0() ot the shalty 30, which operates the cross addingr totalizers hitherto described.

Said shaft operates the computingr wheels in Asaid totalizers, by means of a master wheel,

are power driven from the/drive shaft The connections t'or etfect'ing said drive inand 199 besides' one not shown above the cross-adding totallzer 1911,

vmechanism are either of them shi ted. 11e

'stops 59 have been described as 'bon shift and platen shift devices new 'Similar parts are found on nmm; niaehnes carry-over dii drive shaft dri means of? bevel counter shaft has 299, which are connected by the usual le to be shifted automatically, whenever main clutches 31 and QOl o the compati'eb` eversiole clntehcs 298 lt. will be observed that while the connection'oif the computing to the typewriter, somewhat sin-Vim stops might be placed interchangeably these which would serve only to typewriter carriage.'

lt will be further observed that chine is well adapted-to use by the ypist or boolelteepenbecause a,

U52,- nectionsare etlected bydevices el gous to those in commen use. T i g ger pieces'whieh control addingr a tracting, are parts of column-selectiT adjacent the tfpewriter keyboard, and t tore analogous to keys aowi ase. l over, thetingeiwpiece whieh disco' the lteys'trom the computing mechan close 'to the keyboard and analogous use. The column stops may be unifier in shape, and are the only parts or the amsm Ain an awkward position e@ now onthe'niariet in similar positions. will be observer, that if the machine is times used tor computingl on a Il and the rest ot' the time fonwriting tive matter.. the linger caps 12 i tl (ST ma 'v alwavsbe left adjusted e" computi.;

r on said form. 1l writing the narrative matter. piece 123 n'iaj. be thrown to di position until the typewrit.L i, and at the completion ot the narratiY the linger-piece may be thrown haelt a Variations may be resorted to with scope ofthe invention, and portions improvements may be used without ov llaving thus described :ny inventio claim: i

l. ln a combined tipewritingj 'and comp'uting nun-bine. the combination with traveling carriage and column-selecting therefor. of settable nir-ausassociated wien each column-selecting' hey tor determining whether said combined ymachine shall add or subtract.

2. ln a combined typewritling andeord puting machine,l the combination l travellingr carriage and coluiun-seleting 3. ln a combined typeuriting and com- .1.99

puting machine, the combination with a traveling carriage and computing devices, of a rack on said traveling carriage, stops settable on said' rack to determine the columnar position of said carriage, a tabulating device comprising column-selecting keys c ooperating with said stops, and settable means associated with each column-selecting key for determining whether said Comput-- ing devices shall add or subtract.

4. In a combined typewriting and computing machine, the combination with a traveling carriage and a rack bar thereon, of stops settable along said rack bar, columnselecting keys, settable means associated with each columnselecting key for determining whether the combined machine shall add or subtract, connectidns between the typewriting and computing mechanism, and means controlled serimm. by said column stops for determining how long the connections between the computing mechanism and the typewriting machine shall be effective.

In a combined typewriting and computing machine, the combination with a traveling carriage' and numeral keys, of computing devices, stops settable for determining the position of columns during the travel of said carriage. decimal selecting and column-selecting keys for cooperating with said stops to select desired letter spaces in selected columns, means operated by said stops for selecting the letter spaces in the travel ot' the typewriter 'arriage in which computing shall be done, and means operated by said stops for automatically connecting the numeral keys with the computing devices during the time writing is donc in one column.

In a combined 'typewriting and computing machine, the combination with numeral keys and a traveling carriage, of column stops settable to locate columns during the travel of said carriage, coperating column-selecting keys, means associated with each column-selecting key for determining whether the combined machine shall add or subtract, a catch for holding the mechanism in adding or subtracting position, and means under control of the 'carriage for releasing said catch at the end of a column.

7. In a combined typewriting and computing machine, the combination with a traveling carriage, and stops settablc thereon to determine the position of columns, of cooperating i column-selecting keys, means for moving said column stops to effective. position when they approach the vcolumn selected by the column-selecting key operated, computing mechanism effectivo or ineffective. as determined by said column stops, means for holding said column stops to' hold said computing mechanism effective, and means for returning said column stops to their normal ineffective positionl when said traveling carriage has passed the column in which computing is being done.

8. In a combined typewriting and computing machine, the combination with a traveling carriage and column stops settable thereon, said stops being normally in ineffective position, of column-selecting keys. means for moving said column stops to effective position when they approach the column selected by the column-selecting key operated, means associated with each column-selecting key for determining whether the computing mechanism shall add or subtract, and means under the.control of the column stops for restoring the connection between the numeral keys and the computing mechanism to normal position.

9. In a combined typewriting and computing machine` the comlbination with a traveling carriage and settable identical column stops whereby it may be selectivelyv positioned. of means normally holding said stops in ineffective position, column-selectin;r keys for moving said stops to effective position when the typen-'riter carriage approaches the desired column. computing devices under the control of said column-selecting keys for adding or subtracting, and means controlled by said column stops for determiningat what letter spaces the computing devices shall be effective. for-addingl or subtracting.

l0. In a combined typewriting and computing machine, the combination with numeral keys and a traveling carriage, of column-selecting keys, means settable on 'iol said column-selecting keys for determining' puting mechanism to add or subtract, and' means controlled by said column stops for determining at what letter spaces said con-- nection shall he effective.

12. In a combined typewriting and computing machine. the combination withl com` puting wheels and numeral keys, of a reversible clutch between said keys and wheels, column-selecting keys, and means settable on each colun'm-selecting key for determining how said clutch shall be effective on said y wheels. i

13. In a combined typewritlng and comy tabulating keys for moving said inn stops to effective position, and a ice movable by said column stops when effective Tposition Jfor controllingl the connection between the numeral keys and 'the computing devices, said device being' norn tf'ected by said column stops.

combined typewriting and commehine the combination with nu ntl computing devices, of a v'ective connection between said l devices, a travelingcarriage7 Y 'tioning4 sain carriage, sto )eing normally in inei`- 'lsition throughout the 'travel of rriage. and means for making the li "een said keys and said (lelive by ricffing;- said column sto-ps ve position.

a ooinbined typeivriting and comthe combination with nu- 'keys and computing; Wheels, of a re ciu cli between szftl keys anti said "lor holding` said clutch in is set` a traveling keys for positionassociated with l U for positioning l, device for releasing said en the ypevvriter carriage passes column iva'ich computing is combined the tj, pevyriting and coincoinomation with a traveling' carriage, v ineii'ective settable on a book or latch assoros, al angcleiufemolaninmovingA said column stops ".'iorn to automatically engage a device 'for holding said in position to engage said.

out the column iu *which comrnbinecl type-Writing' and conn une, the combination with a a traveling carriage, ineffective settable ok or latch device.

saidv colv1, iv itli `,ir-ing (lone, numeral Wheels, a connection nection effective by the device Whi li iolds the column stops effective.

mining Whether the combined machine Shall 19. ln a combined typewriting and comput-ing machine, the combination with a traveling carriage and column-selecting keys, of levers for said keys, a lug` settable ony each key lever, computing wheels, a normally ineiective connection betiveen Said keys and said' wheels, and means for making said connection eective by said lug.

20. ln a typewriting machine, the combination 'with a traveling carriage and' column-selecting keys for positioning said carriage, oi' levers for saiflkeys, an interponent settable on each of said levers, acomputing device and means on each key for setting said interponent to control said computing device.

21. ln arombined typcivriting and comouting machine, the combination with a traveling carriage and a cross-adding device, of normally ineffective column stops for arresting said traveling carriage, a hook for intermittently connecting said cross-adding device to said carriage, `a lug on each olumn stop el'ective to catch said hook when the column stop is moved to effective position, colun1n-selectingr keys for so movingr said column stops, and means settable on each column-selecting key for determining whether said cross-adding device shall be effective to add or subtract a result of the operation o a key having its means set In a combined typewriting and computing machine, the combination with a traveling carriage and a cross-adding device, of normally ineiective column stops for arresting said traveling carriage7 a hook lor intermittently connecting said cross-adding device to said carriage. a lug-on each column stop elicctivc to catch said hook when the column stop is moved to effective position, column-selecting,r keys for so movincr said column stops, means settable on each column-selecting key for determining whether said cross-adding device sball be etlective to add or subtract as a result of the operation ols a key having its means set,

numeral keys. a normally ineffective connec-v tion between said numeral keys and said cross-adding device. and means lor makingr said connection cljcctive whenever a column stop is moved to effective position.

23. ln a combined 'typcvvriting and coniputing machine, the combination with numeral keys and a travelingj carriage, 'ot' column-selecting keys for positioning said trav-I eling carriage, a cross-adding device, and means associated with each column-selecting key t'or determining how the mnneral keys shall be effective on said cross-adding device.

'24.' In a combined typewriting and computing-machine. the combination with computing wheels and a traveling carriage. of column stops for positioning said carriage. a rack bar on which said stops are settable, a device adapted to be carried along by said carriage to select denominations one after another on said wheels. said column stops and device being normally in an ineffective. position. column-selecting keys for moving said rack bar to bring-the column stops and denomination-selecting device into effective relation, and means for holding said denommation-selecting device. in its effective position throughout the column.

In a combined typewriting and computing machine, the combination with a traveling carriage, a computing device.-and a' vdevice traveling therewith for selecting denominations one afte another on said computing device and normally in an ineffective position. ot' column-'selecting keys. and means operated by each column-selecting key for moving said denomination device. to effective position when the desired column has been reached. t

Q6. In a combined typewriting and computing machine, the combination with a traveling carriage and column stops settable thereon, of a denomination-selecting device effective on the computing mechanism connected to at least one of said column stops, means normally holding said column stops and said denommation-selecting device in ineffective. positioln, column-selecting keys, means operated by a column-selecting key for moving said selecting device and its column stop to effective position when the desired column has been reached. andmeans automatically holding said stop and said selecting device in effective position throughout the column, and releasing them at the end of' said column to permit them to return to normally ineffective position'.A

27. In a combined typewriting and computing machine, the-combination,with a travcling arriage, numeral keys and computing wheels. of column-selecting keys lfor posit'ioning said carriage, means associated with each column-selecting key and manually settable to determine whether said numeral keys Shall cause said wheels to add or subtract, 'a normally ineffective denomination selector mounted on said carriage, `and means for moving said denomination selector into et'- f'ective position by the ope ation of one ot' said column-selecting keys. j

28. In a combined typewriting and computing machine, the combination with :i

traveling carriage, numeral keys and com- ,put-ing wheels. of' column-selecting keys -for positioning said carriage. means associated with each column-selecting key and manually settable to determine whether said numeral keys shall cause said wheels to add or subtract. a normally ineffective denomination selector mounted on said carriagesmeans for moving said denomination selector into effective position by the operation of one of said column-sehcting keys, and means for holding said denomination selector in an effective position throughout the width of the column which has been seleetedfand then releasing said denomination selector to return it to normally ineffective position.

:29. In a combined typewriting and computing machine, the combination with a traveling carriage and column stops settable thereon. of denommation-selecting rdevices similarly settable thereon, means for normally holding said stops and said devices in ineffective position. column-selecting keys, means associated with cach column-selecting key for determining whether said combined machine shall add or subtract, and means moving said stops and said denomination-selecting devices to effective positions by the ope ation of one of said columnselecting keys.

30. In a combined typewriting and computing machine, the combination with a traveling carriage and column stops settable thereon` of column-selecting keys. computing devices effective in the columns detertermined by said column stops, means for causing said computing devices to be effective to add or subtract, column-selectin keys for positioning said carriage by sai column stops. and means for preventing the operation of a column-selecting key after the carriage hasv passed the column in 'which said key1 should arrest it. 31. In a combined typewriting and computing machine, the combination withl a traveling carriage and column stops settable thereon. of a denommation-selecting device normally in an ineffective position, columnselecting keys, means for, moving said denommation-selecting device to effective position by the operation of said columnselecting keys, and means for holding said device in effective position throughout the column in which the carriage has been arrested.

32. The combination mechanism, of a carriage travelingtodetenmine the different computing zonesfor said computing mechanism, zone-controlling with a comptitingIv units each4 corresponding to a particular echanism, andseparately settable governcien ents individual to each of said zone- 'roliing units for actuating said statemechanism during the travel of i ,De to produce only the particular' the sone correspondingto the Zoneeontrolling unit eiiectiv at the moment.

53. rlhe combination with a computing mechanism, of a traveling carriage adapted dey rmine vthe different computing zones t lc miputing mechanism, normally inenective state-controlling mechanism for 'ying the character of Computation in said mechanism, automatic means adapted to be made effective at will to cause said statcroiling mechanism to set up any desired state in said computing mechanism for any selected bv the carriage, and means l' operated from the carriage for automatically causing,1 reversion to said normally iuetiective state after Zone has been passed.

34. The combination with a combined typeivr'iting and computing mechanism incinding typewriter numeral keys, ot' a statea in any zone.

. controilineT mechanism adaoted to determine hov; the numeral' keys shall be eii'cctive on the computing mec ianism, `a traveling typewriter carriage adapted to select different,

connectitms normally interrupted at the nun ai s y levers, whereby either adding or i ctingmay be done by said keys, controlliingv means whereby said connections may automatically determine whether they shall add or subtract, devices 'for autoiatically establishing said connections at the numeral key levers whenever they are set for adding vor subtracting, and means 'for automatically returning said controlling means from adding or subtracting,| posit-ion to neutral when a computation is completed 6. in a combined typewriting and computing machine, the combination With numeralkeys, a traveling carriage and computing Wheels, of a norn'ially ineffective denomination selecting device `for determining in which. of said Wheels numbers written in typevvriting shail be registered, columnseie'cting keys, means controlled by .said coinmn keys -for determining whether the numbers shall be registered, and Whether they shall be added or subtracted, and connections whereby at the end of registering any completenumber the registering means becomes ineffective.

3T. .in a combined typen'riting and computingl machine, the combination with typewriter numeral keys forming part of the typewriter k'eyl'ioard` and a traveling carriage` of computing devices adapted to compute in various` columns in the travel of said carriage` comicctions whereby said keys ause said computing devices to add or sub-l tract, finger-pieces adjacent said keyboard, separately scttable to determine whether said connections shall cause addition orsubtraction in any column, and a separate fingerpiece adjacent said keyboard` settable to make said connections effective or incttectivc.

32's. -In a combined typcvvriting and computing machine, the combination with typewriter numeral keys and a travcling'carriagc. ot' computing devices adapted to compute in columns selected by said carriage, connections including normally neutral shit'iablc means .for causing said keys to cticct computations additivcly or subtractivcly in said devices. and means for automatically shittingr said shit'table means in bringing said carriage to any zone 'from any other zone, so that by a single shift said means shall determine whether the computations shall bein addition or subtraction.

' 39. In a computing machine, the combination with numeral keys and a traveling carriage. of computing wheels, printing devices controlled by said keys, connections whereby said wheelsmay add or subtract the numbers printed, column-selecting keys for positioning said carriage, a device adjacent said column keys adapted to control said adding and subtracting, and means adjacennt the finger end of the column keys for selectively causing each key to be effective on said device to cause said adding and subtracting. ett). in a computing machine, the combination with numeral keys and a traveling carriage, ci coiuputing Wheels, printing devices controlled by said keys, connections whereby said 'wheels may add or subtract the numbers ririnted, column-selecting keys for positioning` said carriage, a device adjacent said column keys controlling the connections whereby adding and subtracting are done,

interponents slidable along said keys to seleetively1 shift .said device, and indicators, adjacent the finger end of said column keys, to shovv how the interponents will be elicotive. i y

tlml'n a combined typewriting and computing machine, the combination with typewriter alphabet and numeral keys, and a traveling typewriter carriage, of computing devices, normally ineffective connections i whereby said devices may add or subtract the numbers written by said numeral keys, column selecting keys for positioning said carriage, a universal device adjacent said column keys, adapted to select said adding or subtracting, means operated by said device for making said connections selectively effective, settable means whereby each of said column keys may operate said device or not at Will, and means whereby said earriage automatically makes said connections ineffective.

42. In a combined typewriting and computing machine, the combination With a traveling typewriter carriage, of computing devices including computing Wheels, numeral keys for controlling said computing devices. a reversing mechanism for causing said keys to be effective on said Wheels to cause themtol add vor subtract, 'said mechanism including means whereby the keys when operated may be neutral with respect to the computing devices, and means effective at the end of a computing column to automaticallv make said mechanism neutral.

43, In a combined typewriting and comi puting machine, the combination with coniputmg wheels and numeral keys, of a reversmg mechanism for determining Whether said wheels shall be. effective to add, subtract or be neutral at each depression of said keys, a traveling carriagf for selecting denominations on said Wheels, and means made effective by said cai riage at the end of' a computing column to automatically set said mechanism to neutral.

44. In a combined typewriting and computing machine, the-combination with numeral keys and computing wheels, of a clutch between said keys and said wheels settable to cause said keys to add, subtract or be neutral on said wheels, a catch for holding said clutch in Whatever position it is set, a traveling carriage, column-selecting keys for positioning saidicarriage, means associated With each column-selecting key for positioning said clutch, and a device for releasingr said catch and causing said clutch to be neutral when the typewriter carriage passes beyond the column selected by the column key'. i

In a. combined typewriting and computing machine, the combination with numeral keys and computing Wheels, of a clutch ybetween said keys and said Wheels to cause said keys to add, subtract or be neutral on .said Wheels, a catch for holding said clutch 1n Whatever position it is set, a traveling carriage, means for automatically setting said clutch and simultaneously positioning said carriage, and a device for releasing said catch to cause'said clutch to be neutral When the typewriter carriage passes beyond the column selected by the column key.

46T In a computing machine, the combination with computing wheels and n umeral keys, of a key operable to connect said keys to said wheels to effect computations, and means shiftable on said key to determine Whether the computation so effected Will be additive or subtractive. y

47. In a combined typewriting and computing machine, the combination W1th a traveling typewriter carriage and a device adapted to be intermittently picked up thereby to effect cross adding, of normally ineffective means on said carriage for so picking it up, computing Wheels, numeral keys, a key operable to connect said keys to said wheels, -and means for making the carriage pick-up effective by the shifting of said connecting key.

4S. In a combined typevvriting and comcause said numeral keys to effect selectively addition or subtraction on said Wheels and to connect said numeral keys to said Wheels, and means under the control of said carriage for holding said. numeral keys connected to said ivheels during the Writing of all the digits of a number and then releasing said connection.

49. In a computing machine, the combination with a member shiftable to cause addition or subtraction, of' a single latch for holding said member in either position, a spring normally tending to draw said latch and member together, but holding said member in whatever position it is set, and means for releasing said latch to permit said member to be drawn by said spring to angintermediate position tomake it ineffective, to cause either addition or subtraction.-

. 50. In a combined typeivritinggnd computing machine, the combination with umn-selecting mechanism including a set of selecting devices, of a traveling carriage for Which said mechanism is adapted to select the columns, a computing mechanism, and

4individually adjustable means associated operation toeause said computing mechamsm to assume its normal state.

eoznoined typen'riting and coin- ;naiine, the coinliination with a ecing inechanini including a set Selecting devices, of a traveling; carriage ar which said mechanism if; adapted to secalunnia, eeinputing mechanism, ind' iuuallgv adjustable means ansociaed with each selecting device for determining *Whether Said computing mechanism shall add or subtract at the selection of that coliunn, and means effective at the endor' a computing ogeration to cause Said computing mechanism lo assume its normal state.

53. ln a combined typevvritinU and conipning machine, the combination with a traveling carriage and, a computing mechanisn operable for either addition er suhi etion, of a tabulaiing mechanism for seieeting 'the column to which the carriagelis. to be talinlated, means individualijf meadjnstable for each column and Suhseq y.ntly operable by said necnanisni to determine Whether the computing mechanism Shall add or subtract in each column, and means effective at the end oi? a computing operation to cause said conipnting mechanism to assume its normal state.

54. in a printing computing machine adapted to be set te perform additive or suhtraetive types of computation, the combinatahulating' Jfion with a traveling carriage adapted to select an)v of Several columns to print in, of connections "whereby the positioning of the carriage to cause printing in a given column mav determine the color of the printing in puting machine, the combinationvvith a cai-v ringe-'and a zone or column-selecting mechanism, of a computing device capable of addition or subtraction, a Set of: individually setable devices, one for each zone, for Seleetively predeterniining whether the computing device shall add or subtract in that zone, and means dependent upon the operation oi said @elimini-Selecting mechanism to tahulate the carriage to an)v selected column, for bringing into use the pre/determining device associated with the selected column, Lwhereby the'coniputing device is set autoinaticallj,7 lo addition or subtraction, as predetermined for the Selected column.

EDYVARD THOMAS. ilitnesses:

F. E. ALEXANDER, E. B. Liann?. 

